REST
Introduction
REST(Representational State Transfer) is not a standard but a Web application development architectural style, which can be understood as a design pattern. REST is based on some widely used existing protocols and standards such as HTTP, URI, XML, etc. Along with REST, HTTP protocol is used in a more correct way. Compared with SOAP and WSDL-based Web services, REST model provides a more concise solution.
Swagger
https://github.com/OAI/OpenAPI-Specification